MESSAGE FORWARDING METHOD, SYSTEM, NETWORK DEVICE, STORAGE MEDIUM AND PROGRAM PRODUCT

The present application belongs to the technical field of communications. Disclosed are a message forwarding method, a system, a network device, a storage medium and a program product. In the method, when a first forwarding node which is an edge node of an IPv6 network receives a first control message from a second forwarding node in the same IPv6 network, a second control message is generated on the basis of the first control message so as to send to a third forwarding node in the IPv4 network the second control message, the second control message being an IPv4 message; and when the second forwarding node does not have an IPv4 address, the second control message is expanded so as to carry in the second control message the IPv6 address of the second forwarding node. Therefore, when an intermediate node in an IPv6 network does not have an IPv4 address, the method provided in the embodiments of the present application can successfully notify a forwarding node in an IPv4 network about the situation of message fo